水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2012年
3期
61-64
,共4页
投影变形%权重划分%最优抵偿投影面%精度分析
投影變形%權重劃分%最優牴償投影麵%精度分析
투영변형%권중화분%최우저상투영면%정도분석
distortion of projection%weight division%optimal counter action projection plane%precision analysis
桥梁施工建设时控制网投影面选取关系到全桥施工的定位精度,针对特大型桥梁线路长、施工精度要求高、投影不可避免存在变形等特点,提出利用任意投影带的高斯正形投影,对桥梁的各部分按照结构重要性划分投影变形权重,求出使得全桥GPS控制网长度综合变形最小的、符合施工精度要求的、全桥统一的最优抵偿投影面。
橋樑施工建設時控製網投影麵選取關繫到全橋施工的定位精度,針對特大型橋樑線路長、施工精度要求高、投影不可避免存在變形等特點,提齣利用任意投影帶的高斯正形投影,對橋樑的各部分按照結構重要性劃分投影變形權重,求齣使得全橋GPS控製網長度綜閤變形最小的、符閤施工精度要求的、全橋統一的最優牴償投影麵。
교량시공건설시공제망투영면선취관계도전교시공적정위정도,침대특대형교량선로장、시공정도요구고、투영불가피면존재변형등특점,제출이용임의투영대적고사정형투영,대교량적각부분안조결구중요성화분투영변형권중,구출사득전교GPS공제망장도종합변형최소적、부합시공정도요구적、전교통일적최우저상투영면。
The selection of construction control network＇s projective plane has relation to the positioning accuracy when bridges are constructed.According to the characteristics of extra large bridges such as long lines,high construction precision and unavoidable distortion of projection,the method is put forward here which would use the Gaussian orthogonal projection of any projection belt and divide the distortion weight of projection according to the importance of structure in order to obtain the projective plane which could make the comprehensive deformation of the whole bridge＇s control network smallest.This method could not only meet the requirements of construction accuracy,but also make the whole bridge＇s projective plane unified and optimized.
